Your friend is running an aviation role-playing game. You need a character and an aircraft, and you don’t want to be British or American because everyone else is.

You remember an airshow, early 1990s, you and your dad gazing at a silver fighter with unusual wings. You say: OK, my pilot is Swedish, his name’s Lars, and he flies a Saab Viggen.

The more you research your chosen plane, the more you’re smitten. It can take off and land on motorways! It’s technically a biplane! You build the 1:144 Revell kit; find the Matchbox model at a boot sale. You visit the Gothenburg Aeroseum and sit in that huge, high cockpit, in a Cold War hangar hacked from solid rock.

In 2012, the Swedish Air Force Historic Flight restore their Viggen to flying condition and announce a display at Sanicole Airshow in Belgium. On your birthday.

So on a sunny September Sunday you watch that silver fighter rise on the lift from its delta wing and canard foreplane, showing off its unique silhouette for you just like twenty years ago, and you learn that this particular Viggen was actually made in the year of your birth.